Spatial data based study of distribution of hepatitis C in Chongqing / 中华流行病学杂志

ABSTRACT

Objective To understand the spatial distribution of hepatitis C in Chongqing and its influencing factors.Methods The surveillance data of hepatitis C in 38 counties in Chongqing from January 2010 to December 2014 were collected,and spatial autocorrelation analysis and spatial regression analysis were conducted respectively by using software GeoDa 1.6.7.Results The reported incidence of hepatitis C in Chongqing ranged from 7.3/100 000 to 13.6/100 000 during 2010-2014,with the annual reported incidence of 10.3/100 000.The global Moran' s I values were 0.478,0.503,0.529,0.438,0.406 respectively (P＜0.05).The local spatial autocorrelation analysis indicated there were 6,4,7,5 and 6 areas with high incidences of hepatitis C in 2010,2011,2012,2013 and 2014 respectively.Spatial regression analysis revealed that the reported incidence of hepatitis C in Chongqing was associated with the urbanization rate (Z=2.126,P=0.033).Conclusions The spatial distribution of hepatitis C in Chongqing from 2010 to 2014 was highly clustered.The hot spot of hepatitis C were mainly in the core areas and extended areas with well-developed economy,however the cold spot were in southeastern ecological reserve area with less developed economy.Urbanization had a certain positive influence on the distribution of hepatitis C in Chongqing.